Organotin compounds and pesticides containing them

ABSTRACT

A compound of the formula: ##STR1## in which R 1  represents alkyl, cycloalkyl or aralkyl, R* represents fluorophenyl or trifluoromethylphenyl when R 1  is alkyl; R* represents dichlorophenyl, neopentyl, trimethylsilylmethyl, dimethylphenylsilylmethyl or a group of the formula: ##STR2## wherein R 2  represents halogen, trifluoromethyl, lower alkyl or lower alkoxy when R 1  is cycloalkyl; or R* represents 2-thienyl, 3-thienyl, neopentyl, trimethylsilylmethyl, dimethylphenylsilylmethyl or a group of the formula: ##STR3## wherein R 3 , R 4  and R 5  independently represent halogen, trifluoromethyl, lower alkyl or lower alkoxy when R 1  is aralkyl, m represents 1 or 2, and X represents halogen, imidazolyl, triazolyl, phenylthio or a radical selected from the group consisting of: ##STR4## wherein R 6  represents alkyl, R 7  and R 8  independently represent lower alkyl and R 9  and R 10  independently represent hydrogen or lower alkyl when m is 1; or they independently represent oxygen, sulfur or a radical selected from: ##STR5## A process for preparing the compound (I) and a pesticidal composition containing the compound (I) are also provided.

This is a Rule 60 Divisional application of Ser. No. 898688, filed Aug. 21, 1986 now Pat. No. 4774235.

This invention relates to novel asymmetric triorganotin compounds, to their preparation and to pesticidal compositions containing the novel compounds.

There exist a wide variety of pests which are parasitic on plants. Among them, mites (Acarina) do considerable damage to a wide range of crops and garden plants, which causes a serious problem in agricultural management. Since such phytophagous mites rapidly acquire a tolerance to pesticides, novel and efficient pesticides have continuously been sought.

Organic compounds which are known to be useful for controlling such mites include, for example, cyhexatin (Plictran®, U.S. Pat. No. 3,264,177) and fenbutatin oxide (Osadan®, U.S. Pat. No. 3,657,451). However, such known compounds have drawbacks that their pesticidal activities varies depending on species of pests, and that they do not inhibit a certain species of spider mites because of the acquired tolerance.

In view of the above, the present inventors have made extensive study on organotin compounds in order to find effective compounds exhibiting pesticidal activity, in particular, those effective to the spider mites which have already acquired a tolerance against the existing pesticides. As a result of the study, it has been found that the asymmetric triorganotin compounds of the formula (I) below exhibit an excellent pesticidal activity, in particular, to the spider mites exhibiting tolerance against the known organotin compounds.

Thus, the present invention provides assymmetric triorganotin compounds having pesticidal activity of the formula (I): ##STR6## in which R¹ represents alkyl, cycloalkyl or aralkyl, R* represents fluorophenyl or trifluoromethylphenyl when R¹ is alkyl; R* represents dichlorophenyl, neopentyl, trimethylsilylmethyl, dimethylphenylsilylmethyl or a group of the formula: ##STR7## wherein R² represents halogen, trifluoromethyl, lower alkyl or lower alkoxy when R¹ is cycloalkyl; or R* represents 2-thienyl, 3-thienyl, neopentyl, trimethylsilylmethyl, dimethylphenylsilylmethyl or a group of the formula: ##STR8## wherein R³, R⁴ and R⁵ independently represent hydrogen,halogen, trifluoromethyl, lower alkyl or lower alkoxy when R¹ is aralkyl, m represents 1 or 2, and X represents halogen, imidazolyl, triazolyl, phenylthio or a radical selected from the group consisting of: ##STR9## wherein R⁶ represents alkyl, R⁷ and R⁸ independently represent lower alkyl and R⁹ and R¹⁰ independently represent hydrogen or lower alkyl when m is 1; or they independently represent oxygen, sulfur or a radical selected from: ##STR10##

For purposes of the present invention, as disclosed and claimed herein, the following terms are as defined below.

The term "alkyl" refers to a straight or branched saturated hydrocarbon radical having one to twelve carbon atoms, including methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, tert-pentyl, neopentyl, 1-methylbutyl, 1,2-dimethylbutyl, hexyl, heptyl, octyl, nonyl, decyl, and the like.

The term "lower alkyl" refers to an alkyl radical having less than six carbons, of the above defined alkyl.

The term "aralkyl" refers to an alkyl substituted by an aryl radical and includes benzyl, phenylethyl, phenylpropyl, methylbenzyl, neophyl, and the like.

The term "cycloalkyl" refers to a saturated hydrocarbon ring having three to ten carbon atoms, such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl, and the like.

The term "halogen" means chloro, bromo, iodo and fluoro.

The term "pests" herein used should be considered to mean both insects and mites harmful to plants, especially phytophagous ones, and, the term "pesticides" or "pesticidal composition" to include insecticides and acaricides.

The process for the preparation of the compounds of the formula (I) will be detailed below.

The compounds (I) wherein X is halogen, which will hereinafter be referred to as compound (Ia), can be prepared according to the following Reaction Scheme I, whereas the other compounds (I) wherein X is other than halogen can be prepared from the compounds (Ia) according to the Reaction Schemes II to IV hereinafter described. ##STR11## In the above scheme, R* and R¹ are as previously defined, Hal, Y¹ and Y² are each chlorine, bromine or iodine, and n is 1 or 2, with the proviso that when n is 1, R* is a silicon-containing group and when n is 2, R* is an aryl or neopentyl group. The reactions are detailed below.

1st step

A compound (II) is reacted with an organotin halide (III) at a temperature from about 5° C. to 100° C. in a suitable solvent to yield an asymmetric tetraorganotin compound of the general formula (IV). Preferred solvents are ethers such as diethyl ether, dibutyl ether, tetrahydrofuran and the like.

The starting compound (II) may be conventionally prepared under the conditions usually employed for the preparation of a Grignard reagent.

The starting organotin halide of the general formula (III) wherein n is 2 can be represented by the formula:

    (R.sup.1).sub.2 Sn(Y.sup.2).sub.2

and may be prepared by redistribution reaction between a corresponding symmetric tetraorganotin compound of the formula:

    (R.sup.1).sub.4 Sn

wherein R¹ is as defined above, and a stannic halide according to known procedures. The asymmetric phenyldiorganotin halide, which corresponds to the starting compound of the formula (III) wherein n equals to 1 and has the formula:

    (R.sup.1).sub.2 Sn(Phe)Y.sup.2

is itself an objective compound of the present invention and, therefore, may be prepared from the aforementioned starting compound (III) wherein n is 2, in accordance with the Reaction Scheme I.

2nd step

Halogenation of the asymmetric tetraorganotin compound of the formula (IV) is convertionally carried out by direct addition of a gaseous halogen, or by addition of halogen dissolved in a suitable solvent, to a solution of the asymmetric tetraorganotin compound dissolved in the same solvent, while maintaining the reaction temperature at -50° C. to 30° C. Suitable solvents employed in the reaction include chloroform, carbon tetrachloride, benzene, toluene, heptane, hexane, and the like. Chloroform and carbon tetrachloride are especially preferred.

A preferred molar ratio of the asymmetric tetraorganotin compound (IV) and halogen is about 1:1. The reaction temperature is preferably maintained in the range of -10° C. to 10° C.

The reaction terminates when the addition of halogen or a halogen solution is complete. The reaction mixture is concentrated, and the desired compound is separated and purified by recrystallization, vacuum distillation or column chromatography, if necessary. The asymmetric triorganotin halides (Ia) thus prepared are liquid or solid at room temperature.

These halides (Ia) are easily converted to other objective compounds (I) of the invention, such as hydroxides, bis(asymmetric triorganotin)oxides and other various derivatives as shown in the following Reaction Schemes, by known procedures. ##STR12##

In the above schemes, R*, R¹, R⁶, R⁷, R⁸, R⁹, R¹⁰ and Hal are as defined previously, Az is 1,3-imidazol-1-yl or 1,2,4-triazol-1-yl. Desirable conditions for the reactions shown in the above schemes are known in the art, and disclosed, for example, by R. Inhan, Chemical Reviews, 459-539, 1960(October).

The compounds of formula (I) of the present invention exhibit an excellent pesticidal activity against phytophagous pests of various orders, such as Acarina, Lepidoptera, Hemiptera, Coleoptera, Orthoptera and Diptera. In particular, the compounds (I) exhibit an excellent inhibiting activity against a wide variety of acarina such as citrus red mite (Panonychus citri), European red mite (Panonychus ulmi), hawthorn spider mite (Tetranychus viennensis), Kanzawa spider mite (Tetranychus kanzawai), citrus flat mite (Brevipalpus lewisi), privet mite (Brevipalpus obovatus) and pink citrus rust mite (Aculops pelekassi). Moreover, the compounds (I) exert no harm, or only minor harm which is easily repaired, on crops and garden plants.

A certain class of spider mites, for example the kanzawa spider mite, shows resistance to known acaricides, cyhezatin (Plictran®, Dow Chemical Co., see U.S. Pat. No. 3,264,177), and fenbutatin oxide (Osadan®, Shell Oil Co., see U.S. Pat. No. 3,657,451). The compounds (I) of the invention, as stated before, show an excellent inhibiting activity even to the mites having resistance against such known acaricides.

Therefore, the present invention also provides a pesticidal composition which comprises as an active ingredient a compound of formula (I) together with a suitable carrier and/or adjuvant.

The pesticidal composition of the invention can be in any desirable form, such as wettable powders, emulsifiable concentrates, dusts or flowables, and prepared by mixing a compound (I) with one or more of non-phytotoxic carriers or adjuvants in accordance with conventional methods in the art. Such carriers and adjuvants include various liquid substances such as organic solvents and water, surfactants, granular or fine solid substances, and the like.

Wettable powders may be obtained by mixing a compound (I) with a solid carrier, such as clay, talc, white carbon, diatomaceous earth or bentonite, an ionic or nonionic emulsifier or dispersing agent, such as higher alkoxysulfonate, polyoxyehtylenesorbitan, alkylphenoxypolyethoxyethanol or lignosulfonate, and if required, wetting agents, protective colloid and the like. Emulsifiable concentrates may be obtained by dissolving a compound (I) in a suitable organic solvent and then adding thereto an appropriate surfactant. The emulsifiable concentrates can exist as water-in-oil concentrates or as oil-in-water concentrates having a high concentration comparable to a condensed mayonnaise.

The pesticidal compositions of the invention may be employed alone or after mixing with other acaricidal, insecticidal, or fungicidal compositions, plant growth regulator, fertilizer or the like.

The content of the compound (I) in the pesticidal composition in the form of wettable powder or emulsifiable concentrate is generally from 7 to 70 percent by weight, preferably from 20 to 50 percent by weight. The amount of the composition to be applied to loci of pests will vary depending on a number of factors, such as a method, season or locus of application, species of pests and crops, and the like. However, the composition is usually applied at the application rate of 200 to 600 liter per 10 are, after diluted to 500 to 10,000 fold, preferably 1,000 to 5,000 fold.

Dust compositions usually contain from 0.5 to 10 percent, preferably from 2 to 5 percent by weight of the compound (I), and are applied at application rate of from 3 to 5 kg per 10 are. Fine dust compositions contain the compounds (I) in the range of from 0.5 to 10 percent, preferably 1 to 5 percent by weight, and are applied at the rate in the range of from 1.5 to 5 kg per 10 are.

The following detailed Examples, Formulations and Experiments are presented by way of illustration of certain specific embodiments of the invention.

EXAMPLE 1 Dineophyl-metatrifluoromethylphenyltin fluoride (compound 1) (1) Dineophyl-di(metatrifluoromethylphenyl)tin

A 1,000 ml four-necked flask equipped with a stirrer, a thermometer, a dropping funnel and a condenser was charged with magnesium (12.5 g, 0.51 mol) and flushed with nitrogen. Each 3 ml of a mixture of metatrifluoromethylphenyl bromide (113.4 g, 0.504 mol) and tetrahydrofuran (220 g) was portionwise added from the dropping funnel. The reaction occurred with fuming when the mixture was heated to 60°-70° C. While the temperature of the solution was maintained at 60° C., the solution of metatrifluoromethylphenyl bromide dissolved in tetrahydrofuran was added dropwise over about 2 hours.

After completion of the addition, the mixture was refluxed for 5 hours and then cooled to room temperature. Next, a solution of dineophyltin dichloride (85.6 g, 0.188 mol) dissolved in tetrahydrofuran (200 g) was dropwise added from a dropping funnel over 30 minutes, while maintaining the temperature at 10° to 20° C. After the addition, the mixture was kept at the reflux temperature for 7 hours. The mixture was then cooled to room temperature and hydrolyzed by the addition of a saturated aqueous ammonium chloride solution. The organic layer was separated, washed with water, filtered and concentrated under reduced pressure to yield a brown viscous liquid. To this substance was added n-hexane (300 g) and activated clay (50 g) for decolorization. The mixture was filtered and concentrated under reduced pressure to obtain 118 g of dineophyl-di(metatrifluoromethylphenyl)tin as a colorless, clear and viscous liquid. Analysis by gas chromatography of the viscous liquid showed 95% purity. Tin content was 17.2% (theoretical: 17.6%).

(2) Dineophyl-metatrifluoromethylphenyltin fluoride

A 500 ml four-necked flask with a stirrer, a thermometer, a dropping funnel and a condenser was charged with dineophyl-dl(metatrifluoromethylphenyl)tin (80 g, 0.118 mol) obtained in Example 1-(1) and chloroform (200 g). A mixture of bromine (19 g, 0.216 gram atom) and chloroform (100 ml) was dropwise added from the dropping funnel over about 2.5 hours with stirring, while maintaining the temperature of the reaction mixture at -5° to 0° C. After completion of the addition, the mixture was allowed to warm to room temperature, filtered and concentrated under reduced pressure to give 72.2 g of dineophyl-metatrifluoromethylphenyltin bromide as a viscous liquid. The purity of the liquid was 93% based on a gas chromatography analysis. Crude dineophyl-metatrifluoromethylphenyltin bromide (72.2 g) thus prepared, benzen (120 g), potassium fluoride (14 g) and water (56 g) were charged into a 500 ml three-necked flask, and the mixture was refluxed for 2 hours. After completion of the reaction, the aqueous layer was separated off and the organic layer was washed with water, filtered and concentrated under reduced pressure. The resulting residue was crystallizred from n-hexane at the temperature of -20° C. to obtain 33.8 g of dineophyl-metatrifluoromethylphenyltin bromide. This substance was a liquid at room temperature and has a refractive index of n³⁰ =1.5555. Tin content was 21.1% (theoretical: 21.6%).

EXAMPLE 2 Bis(dineophyl-metatrifluoromethylphenyltin)oxide (Compound 3)

Dineophyl-metatrifluoromethylphenyltin fluoride (13 g, 23.7 mmol) obtained in Example 1 was dissolved in benzene (60 g). To the resultant solution was added a 20% aqueous sodium hydroxide solution (7.2 g), and the mixture was allowed to react for one hour at a temperature between 75° C. and 80° C. After completion of the reaction, the aqueous layer was removed and the organic layer was washed with water and filtered. The benzene was distilled of from the organic layer under reduced pressure to yield 11.8 g of bis(dineophyl-metatrifluoromethylphenyltin)oxide as a pale-yellow viscous liquid. Refractive index: n³⁰ =1.5651; Tin content: 21.9% (theoretical: 22.1%).

EXAMPLE 3 Dineophyl-metatrifluoromethylphenyltin acetate (compound 5)

Bis(dineophyl-metatrifluoromethylphenyltin)oxide (6 g, 5.57 mmol) prepared in Example 2 was dissolved in n-hexane (30 g). To this solution was added glacial acetic acid (0.67 g, 11.16 mmol), and the mixture was heated at temperature of 70° to 75° C. for one hour to effect an azeotropic dehydration. After completion of the reaction, the mixture was filtered, and n-hexane was distilled off from the filtrate to obtain 6.4 g of dineophyl-metatrifluoromethylphenyltin acetate as a pale-yellow viscous liquid. Refractive indes: n³⁰ =1.5465. Tin content: 20.1% (theoretical: 20.1%).

EXAMPLE 4 Dineophyl-metatrifluoromethylphenyltindimethyldithiocarbamate (compound 6)

Dineophyl-metatrifluoromethylphenyltin fluoride (10 g, 18.2 mmol) prepared in Example 1 was dissolved in benzene (50 g), and the resulting solution was added with a solution of sodium dimethyldithiocarbamate dihydrate (3.9 g, 21.8 mmol) dissolved in water (15.6 g). The mixture was heated at a temperature of from 75° to 80° C. for one hour. The aqueous layer was removed and the organic layer was washed with water and filtered. The filtrate was distilled to remove the benzene under reduced pressure and the resultant residue was recrystallized from petroleum ether to give 11.4 g of dineophyl-metatrifluoromethylphenyltindimethyldithiocarbamate as a white solid.

Mp: 96°-97° C. Tin content: 18.1% (theoretical: 18.2%).

EXAMPLE 5 Dineophyl-orthotrifluoromethylphenyltin chloride (compound 25)

Dineophyl-diorthotrifluoromethylphenyltin (113 g), a pale-yellow viscous liquid, was prepared in accordance with the teaching of Example 1 except that orthotrifluoromethylphenyl bromide (113.4 g, 0.502 mol), rather than metatrifluoromethylphenyl bromide, was used. Analysis of the resulting liquid by gas chromatography showed 96.3% purity. Tin content was 17.3%(theoretical: 17.6%).

Dineophyl-diorthotrifluoromethylphenyltin (80 g, 0.108 mol) obtained above was dissolved in chloroform (200 g). Chlorine gas (7.6 g, 0.216 gram atom) was then introduced into the resultant solution while keeping the temperature of the solution at between 0° C. and 5° C. The reaction mixture was then concentrated under reduced pressure and the resulting residue was recrystallized from methanol to yield 61.1 g of dineophyl-orthotrifluoromethylphenyltin chloride as a white solid. Analysis by gas chromatography of the solid indicated 97.3% purity.

Mp: 49°-50° C. Tin content: 21.0%(theoretical: 21.0%).

EXAMPLE 6 Bis(dineophyl-orthotrifluoromethylphenyltin)oxide (compound 16)

Dineophyl-orthotrifluoromethylphenyltin chloride (13.4 g, 23.7 mmol) obtained in Example 5 was hydrolyzed in accordance with the procedure described in Example 2 and the resultant product was recrystallized from n-hexane to give 12.1 g of bis(dineophyl-orthotrifluoromethylphenyltin)oxide.

Mp: 42°-44° C. Tin content: 21.8%(theoretical: 22.1%).

EXAMPLE 7 Dineophyl(orthotrifluoromethylphenyl) (1,2,4-triazole-1-yl)tin (compound 7)

Bis(dineophyl-orthotrifluoromethylphenyltin)oxide (6 g, 5.57 mmol) prepared in Example 6 and 1,2,4-triazole (0.77 g, 11.1 mmol) were dissolved in toluene (30 g), and the mixture was heated at 110°-112° C. for one hour to perform an azeotropic dehydration. The reaction mixture was filtered and distilled to remove the benzene, which gave 6.5 g of (dineophyl) (orthotrifluoromethylphenyl) (1,2,4-triazol-1-yl)tin as a pale-yellow viscous liquid.

Refractive index: n³⁰ =1.5690. Tin content: 20.7% (theoretical: 19.8%).

EXAMPLE 8 Bis(dineophyl-orthotrifluoromethylphenyltin)sulfate (compound 55)

Bis(dineophyl-orthotrifluoromethylphenyltin)oxide (2.7 g, 2.51 mmol) prepared in Example 6 was dissolved in benzene (30 ml). To the resultant solution was added a 50% aqueous sulfuric acid solution (5 ml) and the mixture was stirred at room temperature for 15 minutes. The aqueous layer was separated and removed, and the organic layer washed with water, filtered and concentrated under reduced pressure to give 2.8 g of bis(dineophyl-orthotrifluoromethylphenyltin)sulfate as a pale-yellow viscous liquid.

Refractive index: n³⁰ =1.5700. Tin content: 21.0% (theoretical: 20.5%).

EXAMPLE 9 Dineophyl-p-fluorophenyltin fluoride (compound 9)

Dineophyl-diparafluorophenyltin (100.9 g) was obtained as a colorless viscous liquid, in accordance with the teaching of Example 1-(1) except that parafluorophenyl bromide (89.3 g, 0.51 mol), rather than metatrifluoromethylphenyl bromide, was employed.

Gas chromatography analysis of this liquid showed 96.9% purity of the desired compound. Tin content was 20.6% (theoretical: 20.6%).

Dineophyl-di(parafluorophenyl)tin (62.1 g, 0.108 mol) prepared above was dissolved in chloroform (200 g). While the resulting solution was maintained at -15° to -20° C., chlorine gas (7.6 g, 0.216 gram atom) was introduced. The mixture was then concentrated under reduced pressure to give 56 g of dineophyl-parafluorophenyltin chloride as a pale-yellow liquid. Gas chromatography analysis indicated 87.5% purity of the desired product.

A mixture consisting of the crude dineophyl-parafluorophenyltin chloride (50 g) and potassium fluoride (5.8 g, 0.1 mol) was heated for 2 hours in the presence of benzene (120 g) and water (23 g). The aqueous layer of the reaction mixture was removed, and the organic layer was washed with water, filtered and concentrated under reduced pressure. The residue thus obtained was crystallized from petroleum ether to give 38.5 g of dineophyl-parafluorophenyltin fluoride as a white solid.

Mp: 59°-62° C. Tin content: 23.2% (theoretical: 23.8%).

EXAMPLE 10 Bis(dineophyl-parafluorophenyltin)sulfide (compound 58)

Dineophyl-parafluorophenyltin fluoride (6 g, 12 mmol) obtained above was dissolved in benzene (30 ml). To this solution was added potassium sulfide (1 g, 17.7 mmol) dissolved in water (4 g) and the mixture was refluxed for 2 hours.

After the aqueous layer was separated and removed from the mixture, the organic layer washed with water and filtered. Evaporation of the benzene under reduced pressure yielded 6.4 g of bis(dineophyl-parafluorophenyltin)sulfide as a pale-yellow viscous liquid.

Refractive index: n³⁰ =1.6155. Tin content: 23.1% (theoretical: 23.9%).

EXAMPLE 11 Bis(dineophyl-parafluorophenyltin)oxide (compound 17)

Using dineophyl-parafluorophenyltin fluoride (15 g, 30 mmol) prepared in Example 9 and a 20% aqueous sodium hydroxide solution (9 g), bis(dineophyl-parafluorophenyltin)oxide was prepared in accordance with the procedure as described in Example 2, as a white solid.

Mp: 84°-86° C. Tin content: 24.5% (theoretical: 24.3%).

EXAMPLE 12 Dineophyl(parafluorophenyl) (1,3-imidazol-1-yl)tin (compound 54)

Bis(dineophyl-parafluorophenyltin)oxide (6 g, 6.14 mmol) prepared in Example 11 and 1,3-imidazole (0.83 g, 12.3 mmol) were dissolved in toluene (30 g) and the mixture was heated at 110°-112° C. for one hour to effect an azeotropic dehydration. Filtration of the reaction mixture and evaporation of the benzene gave a solid residue, which was crystallized from n-hexane to yield 5.1 g of dineophyl(parafluorophenyl) (1,3-imidazol-1-yl)tin.

Mp: 123°-127° C. Tin content: 21.2% (theoretical: 21.7%).

EXAMPLE 13 Dicyclohexyl-parafluorophenyltin fluoride (compound 14)

Dicyclohexyl-diparafluorophenyltin (85.2g) was prepared in accordance with the procedure as described in Example 1(1) except that parafluorophenyl bromide (89.3 g, 0.51 mol) and dicyclohexyltin dichloride (76.9 g, 0.216 mol), rather than metatrifluoromethylphenyl bromide and dineophyltin dichloride, were employed. Gas chromatography of the recrystallized product from isopropanol showed 98.6% purity.

Mp: 88°-90° C. Tin content: 25.1% (theoretical: 25.0%).

In accordance with the procedure as described in Example 1(2), the above product (20 g, 0.042 mol) was first reacted with bromine to produce crude dicyclohexyl-parafluorophenyltin bromide, which was then treated with sodium fluoride to yield 11.7 g of dicyclohexyl-parafluorophenyltin fluoride as a white solid.

Mp: 234°-240° C. (dec.). Tin content: 29.9% (theoretical: 29.7%).

EXAMPLE 14 Dineophyl-orthotrifluoromethylphenyltin isocyanate (compound 60)

Dineophyl-orthotrifluoromethylphenyltin chloride (6 g, 10.6 mmol) prepared in Example 5, sodium cyanate (1.1 g, 15.9 mmol) and acetone (40 g) were charged into a flask and the mixture was refluxed for 3 hours. The mixture was then added with benzene (50 g) and water (30 g). The aqueous layer was removed, and the organic layer was washed with water and filtered.

Evaporation of the benzene under reduced pressure gave 5.6 g of dineophyl-orthotrifluoromethylphenyltin isocyanate as a colorless viscous liquid.

Refractive index: n³⁰ =1.5609. Tin content: 21.0% (theoretical: 20.7%).

EXAMPLE 15 Dineophyl-orthotrifluoromethylphenyltin isothiocyanate (compound 59)

Dineophyl-orthotrifluoromethylphenyltin chloride (6 g, 10.6 mmol) prepared in Example 5, potassium thiocyanate (1.5 g, 15.9 mmol), benzene (40 g) and water (10 g) were charged into a flask and the mixture was refluxed for 2 hours. The aqueous layer was removed and the organic layer was washed with water and filtered. Evaporation of the benzene under reduced pressure gave 6.0 g of dineophyl-orthotrifluoromethylphenyltin isothiocyanate as a colorless viscous liquid.

Refractive index: n³⁰ =1.5787. Tin content: 20.5% (theoretical: 20.2%).

EXAMPLE 16 Dineophyl-orthotrifluoromethylphenyltin methylsulfide (compound 67)

Dineophyl-orthotrifluoromethylphenyltin chloride (6 g, 10.6 mmol) prepared in Example 5, a 15% aqueous sodium methylsulfide solution (7.4 g, 15.9 mmol) and benzene (40 g) were charged into a flask and the mixture was refluxed for 2 hours. The aqueous layer was removed and the organic layer was washed with water and filtered. Evaporation of the benzene under reduced pressure yielded 4.6 g of dineophyl-orthotrifluoromethylphenyltin methylsulfide as a colorless viscous liquid.

Refractive index: n³⁰ =1.5804. Tin content: 20.9% (theoretical: 20.6%).

EXAMPLE 17 Dineophyl-orthotrifluoromethylphenyltin phenoxide (compound 68)

Bis(dineophyl-orthotrifluoromethylphenyltin)oxide (6 g, 5.6 mmol) prepared in Example 6, phenol (1.0 g, 11.2 mmol) and toluene (40 g) were charged into a flask and the mixture was allowed to react substantially in accordance with the procedure described in Example 7. Evaporation of the toluene followed by recrystallization of the resulting residue from petroleum ether yielded 4.4 g of dineophyl-orthotrifluoromethylphenyltin phenoxide as a white solid.

Mp: 69°-71° C. Tin content: 19.1% (theoretical: 19.0%).

EXAMPLE 18 Dineophyl-orthotrifluoromethylphenyltin phenylsulfide (compound 69)

A mixture of bis(dineophyl-orthotrifluoromethylphenyltin)oxide (6.0 g, 5.6 mmol) prepared in Example 6, thiophenol (1.2 g, 11.2 mmol) and toluene (40 g) was treated with the procedure described in Example 7. The product was recrystallized from n-hexane to obtain 5.2 g of dineophyl-orthotrifluoromethylphenyltin phenylsulfide as a white solid.

Mp: 81°-82° C. Tin content: 18.7% (theoretical: 18.6%).

EXAMPLE 19 S-Dineophyl-orthotrifluoromethylphenyltin) O,O-diethyldithiophosphate (compound 71)

In substantial accordance with the procedure described in Example 7, a mixture of bis(dineophyl-orthotrifluoromethylphenyltin)oxide (6.8 g, 6.4 mmol) prepared in Example 6, O,O-diethyldithiophosphate (2.2 g, 12.8 mmol) and toluene (40 g) was reacted to provide 8.0 g of S-(dineophyl-orthotrifluoromethylphenyltin) O,O-diethyldithiophosphate as a colorless viscous liquid.

Refractive index: n³⁰ =1.5759.

EXAMPLE 20 Dineophyl (4-chloro-3-trifluoromethylphenyl)tin bromide (compound 74)

Dineophyl-di(4-chloro-3-trifluoromethylphenyl)tin (125.8), a pale-yellow viscous liquid, was prepared in substantial accordance with the procedure described in Example 1-(1) except that 4-chloro-3-trifluoromethylphenyl bromide (131.0 g, 0.504 mol), rather than metatrifluoromethylphenyl bromide, was employed. Gas chromatography analysis of this liquid showed 98.5% purity. Tin content was 15.6% (theoretical: 15.9%).

Following the procedure described in Example 1-(2), dineophyl-di(4-chloro-3-trifluoromethylphenyl)tin (87.8 g, 0.118 mol) obtained above was then reacted with bromine to obtain a pale yellow solid (79.2 g). This solid was recrystallized from methanol (200 g) to give 65.7 g of dineophyl-4-chloro-3-trifluoromethylphenyltin bromide as a white solid. Gas chromatography analysis of this solid showed 99.0% purity. Mp: 72°-74° C. Tin content: 18.3% (theoretical: 18.4%).

EXAMPLE 21 Dineophyl-2,4-difluorophenyltin fluoride (compound 79)

Dineophyl-di(2,4-difluorophenyl)tin (107.9 g), a colorless viscous liquid, was prepared according to the procedure described in Example 1-(1) except that 2,4-difluorophenyl bromide (98.4 g, 0.51 mol), rather than metatrifluoromethylphenyl bromide, was used. Gas chromatography analysis of this liquid showed 95.5% purity. Tin content was 19.0% (theoretical: 19.4%).

Next, following the procedure described in Example 1(2), the above product (72.1 g, 0.118 mol) was reacted with bromine to obtain crude dineophyl-2,4-difluorophenyltin bromide, which was then treated with sodium fluoride. Recrystallization of the resultant product from n-hexane gave 30.6 g of dineophyl-2,4-difluorophenyltin fluoride as a white solid.

Mp: 60°-65° C. Tin content: 22.6% (theoretical: 22.9%).

EXAMPLE 22 Dineophyl-2,4,5-trifluorophenyltin chloride (compound 92)

Dineophyl-di(2,4,5-trifluorophenyl)tin (113.1 g), a pale-yellow viscous liquid, was prepared in substantial accordance with the procedure described in Example 1(1) except that 2,4,5-trifluorophenyl bromide (105.9 g, 0.502 mol), rather than metatrifluoromethylphenyl bromide, was employed. Gas chromatography analysis of this liquid showed 96.0% purity. Tin content was 17.8% (theoretical: 18.3%).

The above product (76.4 g, 0.118 mol) was then reacted with chlorine and the reaction mixture was worked up in substantial accordance with the procedure described in Example 5. Recrystallization of the product from n-hexane gave 39.3 g of dineophyl-2,4,5-trifluorophenyltin chloride as a white solid. Gas chromatography analysis of this solid showed 99.9% purity.

Mp: 65°-67° C. Tin content: 21.7% (theoretical: 21.5%).

EXAMPLE 23 Dineophyl-parachlorophenyltin fluoride (compound 108)

Dineophyl-di(parachlorophenyl)tin (107.5 g), a colorless viscous liquid, was prepared in substantial accordance with the procedure described in Example 1 except that metachlorophenyl bromide (97.4 g, 0.51 mol), rather than metatrifluoromethylphenyl bromide, was employed. Gas chromatography analysis of this liquid indicated 97.5% purity. Tin content was 19.1% (theoretical: 19.5%).

In substantial accordance with the procedure described in Example 1(2), the above product (71.8 g, 0.118 mol) was reacted with bromine to obtain crude dineophyl-metachlorophenyltin bromide, which was then reacted with sodium fluoride. The resulting product was recrystallized from n-hexane to provide 32.7 g of dineophyl-metachlorophenyltin fluoride as a white solid.

Mp: 104°-105° C. Tin content: 23.0% (theoretical: 23.0%).

EXAMPLE 24 Dineophyl-phenyltin fluoride (compound 144)

Dineophyl-diphenyltin (108.9 g), a colorless viscous liquid, was prepared in substantial accordance with the procedure described in Example 1-(1) except that phenyl bromide (78.8 g, 0.502 mol), rather than metatrifluoromethylphenyl bromide, was employed. Gas chromatography analysis of this liquid showed 97.8% purity. Tin content was 21.7% (theoretical: 22.0%).

Dineophyl-phenyltin fluoride (39.6 g), a white solid, was prepared using the above product (80 g, 0.128 mol) as described in Example 1(2).

Mp: 37°-40° C. Tin content: 24.9% (theoretical: 24.7%).

EXAMPLE 25 Dineophyl-orthomethoxyphenyltin chloride (compound 133)

Dineophyl-di(orthomethoxyphenyl)tin (105.9 g), a colorless viscous liquid, was prepared in substantial accordance with the procedure described in Example 1(1) except that orthoanisyl bromide (93.8 g, 0.502 mol), rather than metatrifluoromethylphenyl bromide, was employed. Gas chromatography analysis of this liquid showed 96.5% purity. Tin content was 19.5% (theoretical: 19%).

Dineophyl-orthomethoxyphenyltin chloride (30.1 g), a white solid, was prepared using the above product (70.7 g, 0.118 mol) and chlorine in the manner as described in Example 5. Gas chromatography analysis of this solid showed 99.5% purity.

Mp: 69°-72° C. Tin content: 22.7% (theoretical: 22.5%).

EXAMPLE 26 Dineophyl-3-thienyltin fluoride (compound 215) (1) Dineophyl-di(3-thienyl)tin

A 1,000 ml four necked flask equipped with a stirrer, a thermometer, a dropping funnel and a condenser was charged with 3-thienyl bromide (75 g, 0.0461 mol) and absolute ether (200 g). n-Butyl lithium (185.3 g) (15% solution in n-hexane) was added in dropwise fashion from the dropping funnel while maintaining the temperature of the reaction mixture at below -50° C. After completion of the addition, the reaction mixture was stirred for about 10 minutes at below -50° C. and then added with a solution of dineophyltin dichloride (73.5 g, 0.161 mol) dissolved in tetrahydrofuran (140 g) through the dropping funnel at -50° to -60° C. over about 30 minutes. After completion of the addition, the mixture was stirred for about 2 hours at that temperature, allowed to warm to room temperature and stirred for about additional one hour. The reaction mixture was then hydrolyzed by the addition of water (120 ml). The organic layer was separated, added with hexane (200 g), washed with water, filtered and concentrated under reduced pressure to yield a brown viscous liquid. To this liquid were added n-hexane (300 g) and activated clay (50 g) for dicolorization. The mixture was filtered and concentrated under reduced pressure to obtain 81.7 g of dineophyl-di(3-thienyl)tin as a colorless, transparent and viscous liquid. Gas chromatography analysis of this liquid showed 95.0% purity. Tin content was 21.0% (theoretical: 21.6%).

(2) Dineophyl-3-thienyltin fluoride

In substantial accordance with the procedure described in Example 1(2), dineophyl-di(3-thienyl)tin (80 g, 0.145 mol) obtained above was reacted with bromine to give crude dineophyl-3-thienyltin bromide, which was then reacted with sodium fluoride. The resulting product was recrystallized from n-hexane to provide 21.5 g of dineophyl-3-thienyltin fluoride as a white solid.

Mp: 85°-90° C. Tin content: 24.7% (theoretical: 24.4%).

EXAMPLE 27 Dicyclohexyl-paratrifluoromethylphenyltin chloride (compound 164)

Crude dicyclohexyl-di(paratrifluoromethylphenyl)tin (101.7 g), a white solid, was prepared in accordance with the procedure described in Example 1(1) except that paratrifluoromethylphenyl bromide (113.4 g, 0.504 mol) and dicyclohexyltin dichloride (66.9 g, 0.188 mol), rather than metatrifluoromethylphenyl bromide and dineophyltin dichloride, were employed. Gas chromatography analysis of this solid indicated 93.3% purity.

In substantial accordance with the procedure described in Example 5, the above product (60 g, 0.105 mol) was then reacted with chlorine and the resulting mixture was worked up to yield 31.5 g of dicyclohexyl-paratrifluoromethylphenyltin chloride as a white solid. gas chromatography analysis of this solid indicated 99.0% purity.

Mp: 74°-75° C. Tin content: 25.8% (theoretical: 25.5%).

EXAMPLE 28 Bis(dicyclohexyl-paratrifluoromethylphenyltin)oxide (compound 165)

Dicyclohexyl-paratrifluoromethylphenyltin chloride (15.0 g, 32.2 mmol) prepared in Example 27 was treated in the manner as described in Example 6 to provide 11.3 g of bis(dicyclohexyl-paratrifluoromethylphenyltin)oxide as a white solid.

Mp: 86°-89° C. Tin content: 26.8% (theoretical: 27.1%).

Dicyclohexyl-paratrifluoromethylphenyltin-n-butylthioglycolate (compound 167)

Bis-(dicyclohexyl-paratrifluoromethylphenyltin)oxide (6 g, 16.8 mmol) prepared in Example 28 and n-butyl thioglycolate (2.0 g, 13.6 mmol) were dissolved in toluene (30 g) and the mixture was heated at 110°-112° C. for one hour to effect an azeotropic dehydration. Evaporation of the toluene under reduced pressure gave 7.8 g of pale-yellow liquid.

Refractive index: n³⁰ =1.5337. Tin content: 20.4% (theoretical: 20.6%).

EXAMPLE 30 Dicyclohexyl-3,4-dichlorophenyltin fluoride (compound 190)

Dicyclohexyl-di(3,4-dichlorophenyl)tin (191.9 g), a colorless viscous liquid, was prepared in substantial accordance with the procedure described in Example 1(1) except that 3,4-dichlorophenyl bromide (113.8 g, 0.504 mol) and dicyclohexyltin dichloride (66.9 g, 0.188 mol), rather than metatrifluoromethylphenyl bromide and dineophyltin dichloride, were employed. Gas chromatography analysis of this liquid showed 95.9% purity. Tin content was 20.2% (theoretical: 20.6%).

Dicyclohexyl-di(3,4-dichlorophenyl)tin (86.5 g, 0.150 mol) prepared above was allowed to react and the resulting mixture was worked up, as described in Example 1-(2), to obtain 35.5 g of dicyclohexyl-3,4-dichlorophenyltin fluoride as a white solid.

Mp: 193° C. Tin content: 26.0% (theoretical: 26.4%).

EXAMPLE 31 Dicyclohexyl-paratolyltin chloride (compound 197)

Dicyclohexyl-di(paratolyl)tin (82.5 g), a pale-yellow viscous liquid, was prepared in substantial accordance with the procedure described in Example 1(1) except that paratolyl bromide (86.2 g, 0.504 mol) and dicyclohexyltin dichloride (66.9 g, 0.188 mol), rather than metatrifluoromethylphenyl bromide and dineophyltin dichloride, were employed. gas chromatography analysis of this liquid showed 94.5% purity. Tin content was 24.7% (theoretical: 25.4%).

The above product (70 g, 0.150 mol) was then allowed to react with chlorine and the resulting mixture was worked up, as described in Example 5, to obtain 34.5 g of dicyclohexyl-paratolyltin chloride as a colorless viscous liquid. Gas chromatography analysis of this liquid showed 98.4% purity.

Refractive index: n⁺ =1.5705. Tin content: 28.6% (theoretical: 28.8%).

EXAMPLE 32 Dicyclohexyl-trimethylsilylmethyltin chloride (compound 232) (1) Dicyclohexyl-phenyltin chloride

Dicyclohexyl-di(phenyl)tin (155.2 g), a white solid, was prepared in substantial accordance with the procedure described in Example 1(1) except that phenyl bromide (156.2 g, 1.008 mol) and dicyclohexyltin dichloride (133.8 g, 0.376 mol), rather than metatrifluoromethylphenyl bromide and dineophyltin dichloride, were employed. Gas chromatography analysis of this solid showed 94.95 purity.

The above product (150.8 g, 0.343 mol) was then allowed to react with chlorine and the resultant mixture was worked up as described in Example 5. Recrystallization of the product from n-hexane gave 86.0 g of dicyclohexyl-phenyltin chloride as a white solid. Gas chromatography analysis of this solid showed 98.8% purity.

MP: 50°-52° C. Tin content: 30.2% (theoretical: 29.9%)

(2) Dicyclohexyl-trimethylsilylmethyltin chloride

Dicyclohexyl-phenyl-trimethylsilylmethyltin (79.4 g), a colorless viscous liquid, as prepared as described in Example 1(1). Using dicyclohexyl-phenyltin chloride (74.7 g, 0.188 mol) obtained above and trimethylsilylmethyl cloride (30.8 g, 0.251 mol) instead of dineophyltin dichloride and metatrifluoromethylphenyl bromide respectively. In this example, 6.1 g (0.251 mol) of magnesium and 110 g of tetrahydrofuran were employed. Gas chromatography analysis of this liquid showed 97.5% purity.

In the manner as taught in Example 5, the above product (48.5 g, 0.108 mol) was reacted with chlorine, and the resultant mixture was concentrated. The residue was recrystallized from n-hexane to yield 35.2 g of dineophyl-trimethylsilylmethyltin chloride as a white solid. Gas chromatography analysis of this solid showed 99.0% purity.

Mp: 74° C.

EXAMPLE 33 Bis(dicyclohexyl-trimethylsilylmethyltin)oxide (compound 233)

Dicyclohexyl-trimethylsilylmethyltin chloride (25.3 g, 0.062 mol) prepared in Example 32 was allowed to react and the resultant mixture was worked up, as described in Example 2, to provide 21.2 g of bis(dicyclohexyl-trimethylsilylmethyltin)oxide as a white solid. Mp: 151°-153° C.

EXAMPLE 34 o-(Dicyclohexyl-trimethylsilylmethyltin) o,o-dibutylphosphate (compound 237)

Bis(dicyclohexyl-trimethylsilylmethyltin)oxide (6.8 g, 8.9 mmol), o,o-dibutylphosphate (3.7 g, 17.8 mmol) and toluene (40 g) were allowed to react as described in Example 7. Evaporation of the toluene from the mixture and recrystallization of the residue from methanol/acetonitrile gave 8.3 g of o-(dicyclohexyl-trimethylsilylmethyltin) o,o-dibutylphosphate as a white solid. Mp: 130°-132° C.

In substantial accordance with the procedures as taught in the above examples, a variety of organotin compounds (I) of the invention were prepared. Physicochemical properties of the compounds are listed in Table 1.

In Table 1, the following abbreviations were employed:

Me: methyl

Et: ethyl

Bu: butyl

Oct: octyl

Phe: phenyl

Ac: acetyl

Tin content in parenthesis represents theoretical amount.

                                      TABLE 1-1                                    __________________________________________________________________________      ##STR13##                                                                                                      Physical property                             Com-                                                       GLC                 pound                                                      purity              No. R.sup.2 R.sup.1                                                                              m  X           Appearance                                                                              m.p. or b.p.                                                                          n.sup.30                                                                           Tin                                                                                  (%)tent             __________________________________________________________________________                                                          (%)                       1   m-CF.sub.3                                                                             Neophyl                                                                              1  F           Viscous liquid  1.5555                                                                             21.1                                                                           (21.6)                    2   p-F     n-Butyl                                                                              1  F           White solid                                                                             205-210° C.                                                                        34.2                                                                           (34.4)                    3   m-CF.sub.3                                                                             Neophyl                                                                              2  O           Viscous liquid  1.5651                                                                             21.9                                                                           (22.1)                    4   m-CF.sub.3                                                                             Neophyl                                                                              1  Cl          Colorless liquid                                                                               1.5591                                                                             21.2  99.3                                                                     (21.0)                    5   m-CF.sub.3                                                                             Neophyl                                                                              1  OCOMe       Viscous liquid  1.5465                                                                             20.1                                                                           (20.1)                    6   m-CF.sub.3                                                                             Neophyl                                                                              1  SSCN(Me).sub.2                                                                             White solid                                                                             96-97° C.                                                                          18.1                                                                           (18.2)                    7   o-CF.sub.3                                                                             Neophyl                                                                              1  Triazolyl   Viscous liquid  1.5690                                                                             20.7                                                                           (19.8)                    8   o-CF.sub.3                                                                             Neophyl                                                                              1  F           White solid                                                                             38-40° C.                                                                          21.0                                                                           (21.6)                    9   p-F     Neophyl                                                                              1  F           White solid                                                                             59-62° C.                                                                          23.2                                                                           (23.8)                    10  m-F     Neophyl                                                                              1  F           White solid                                                                             35-38° C.                                                                          23.3                                                                           (23.8)                                                                         (mg)                      11  o-CF.sub.3                                                                             n-Butyl                                                                              1  F           White solid                                                                             105-111° C.                                                                        29.2                                                                (decomp.)  (29.9)                    12  m-CF.sub.3                                                                             n-Butyl                                                                              1  F           White solid                                                                             142° C.                                                                            29.2                                                                (decomp.)  (29.9)                    13  p-F     n-Octyl                                                                              1  F           White solid                                                                             57-60° C.                                                                          26.0                                                                           (25.8)                    14  p-F     Cyclohexyl                                                                           1  F           While solid                                                                             235-240° C.                                                                        29.9                                                                (decomp.)  (29.7)                    15  m-CF.sub.3                                                                             Cyclohexyl                                                                           1  F           While solid                                                                             280° C.                                                                            26.8                                                                (decomp.)  (26.4)                    16  o-CF.sub.3                                                                             Neophyl                                                                              2  O           White solid                                                                             42-44° C.                                                                          21.8                                                                           (22.1)                    17  p-F     Neophyl                                                                              2  O           White solid                                                                             84-86° C.                                                                          24.5                                                                           (24.3)                    18  m-F     Neophyl                                                                              2  O           White solid                                                                             37-39° C.                                                                          24.6                                                                           (24.3)                    19  o-CF.sub.3                                                                             n-Butyl                                                                              2  O           Colorless liquid                                                                               1.5031                                                                             31.3                                                                           (32.2)                    20  m-CF.sub.3                                                                             n-Butyl                                                                              2  O           Colorless liquid                                                                               1.4939                                                                             30.8                                                                           (30.7)                    21  p-F     n-Butyl                                                                              2  O           Colorless liquid                                                                               1.5285                                                                             35.3                                                                           (35.3)                    22  p-F     n-Octyl                                                                              2  O           Colorless liquid                                                                               1.5084                                                                             26.5                                                                           (26.5)                    23  p-F     Cyclohexyl                                                                           2  O           White solid                                                                             69-72°                                                                             30.4                                                                           (30.6)                    24  m-CF.sub.3                                                                             n-Butyl                                                                              1  Br          Colorless liquid                                                                         170-172° C./                                                                  1.5109                                                                             25.5  96.3                                                          7 mmHg     (25.9)                    25  o-CF.sub.3                                                                             Neophyl                                                                              1  Cl          White solid                                                                             49-50° C.                                                                          21.0  97.3                                                                     (21.0)                    26  p-F     Neophyl                                                                              1  Cl          Colorless liquid                                                                               1.5824                                                                             23.0  99.3                                                                     (23.0)                    27  m-F     Neophyl                                                                              1  Cl          Colorless liquid                                                                               1.5829                                                                             23.1  97.1                                                                     (23.0)                    28  o-CF.sub.3                                                                             n-Butyl                                                                              1  Cl          Colorless liquid                                                                               1.5005                                                                             28.1  95.0                                                                     (28.7)                    29  p-F     n-Butyl                                                                              1  Cl          Colorless liquid                                                                         160-165° C./                                                                  1.5249                                                                             32.2  96.2                                                          4-6 mmHg   (32.7)                    30  p-F     n-Octyl                                                                              1  Cl          Colorless liquid                                                                               1.5041                                                                             25.1  96.2                                                                     (25.0)                    31  p-F     Cyclohexyl                                                                           1  Cl          White solid                                                                             52-55° C.                                                                          28.6  98.7                                                                     (28.6)                    32  m-CF.sub.3                                                                             Cyclohexyl                                                                           1  Cl          Pale yellow liquid                                                                             1.5352                                                                             24.5  98.4                                                                     (25.5)                    33  o-CF.sub.3                                                                             Neophyl                                                                              1  OCOMe       Viscous liquid  1.5535                                                                             20.0                                                                           (25.1)                    34  p-F     Neophyl                                                                              1  OCOMe       Viscous liquid  1.5669                                                                             22.5                                                                           (22.0)                    35  m-F     Neophyl                                                                              1  OCOMe       Viscous liquid  1.5675                                                                             22.4                                                                           (22.0)                    36  o-CF.sub.3                                                                             n-Butyl                                                                              1  OCOMe       Viscous liquid  1.4851                                                                             26.5                                                                           (27.2)                    37  m-CF.sub.3                                                                             n-Butyl                                                                              1  OCOMe       Colorless solid                                                                         75-78° C.                                                                          27.3                                                                           (27.2)                    38  p-F     n-Butyl                                                                              1  OCOMe       Colorless solid                                                                         83-85° C.                                                                          31.1                                                                           (30.7)                    39  p-F     n-Octyl                                                                              1  OCOMe       Colorless solid                                                                         27-30° C.                                                                          24.0                                                                           (23.8)                    40  p-F     Cyclohexyl                                                                           1  OCOMe       Colorless solid                                                                         48-50° C.                                                                          27.5                                                                           (27.0)                    41  o-CF.sub.3                                                                             Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Colorless solid                                                                         102- 105° C.                                                                       18.5                                                                           (18.3)                    42  p-F     Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Colorless solid                                                                         74-76° C.                                                                          19.6                                                                           (20.2)                    43  m-F     Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid               20.3                                                                           (20.2)                    44  o-CF.sub.3                                                                             n-Butyl                                                                              1  SSCN(Me).sub.2                                                                             Colorless solid                                                                         28-30° C.                                                                          23.9                                                                           (23.8)                    45  m-CF.sub.3                                                                             n-Butyl                                                                              1  SSCN(Me).sub.2                                                                             Yellow liquid   1.5611                                                                             23.8                                                                           (23.8)                    46  p-F     n-Butyl                                                                              1  SSCN(Me).sub.2                                                                             Pale yellow liquid                                                                             1.5880                                                                             26.5                                                                           (26.5)                    47  p-F     n-Octyl                                                                              1  SSCN(Me).sub.2                                                                             Pale yellow liquid                                                                             1.5510                                                                             21.2                                                                           (21.2)                    44  p-F     Cyclohexyl                                                                           1  SSCN(Me).sub.2                                                                             Colorless solid                                                                         101-105° C.                                                                        24.2                                                                           (23.7)                    49  p-F     Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Colorless solid                                                                         134-137° C.                                                                        21.0                                                                           (21.6)                    50  m-F     Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Colorless solid                                                                         154-157° C.                                                                        21.6                                                                           (21.6)                    51  p-F     n-Butyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Colorless solid                                                                         68-72° C.                                                                          28.7                                                                           (30.0)                    52  m-CF.sub.3                                                                             n-Butyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Viscous liquid  1.5205                                                                             26.0                                                                           (26.6)                    53  p-F     n-Octyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Viscous liquid  1.5220                                                                             22.8                                                                           (23.4)                    54  p-F     Neophyl                                                                              1  1,3-Imidazol-1-yl                                                                          Colorless solid                                                                         123-127° C.                                                                        21.2                                                                           (21.7)                    55  o-CF.sub.3                                                                             Neophyl                                                                              2  OSO.sub.2 O Viscous liquid  1.5700                                                                             21.0                                                                           (20.5)                    56  p-F     Neophyl                                                                              2  OSO.sub.2 O Viscous liquid  1.5961                                                                             23.0                                                                           (22.5)                    57  o-CF.sub.3                                                                             Neophyl                                                                              2  S           Viscous liquid  1.6029                                                                             20.9                                                                           (21.7)                    58  p-F     Neophyl                                                                              2  S           Viscous liquid  1.6155                                                                             23.1                                                                           (23.9)                    59  o-CF.sub.3                                                                             Neophyl                                                                              1  NCS         Liquid          1.5787                                                                             20.5                                                                           (20.2)                    60  o-CF.sub.3                                                                             Neophyl                                                                              1  NCO         Liquid          1.5609                                                                             21.0                                                                           (20.7)                    61  o-CF.sub.3                                                                             Neophyl                                                                              1                                                                                  ##STR14##  Liquid          1.5279                                                                             16.5 (16.3)               62  o-CF.sub.3                                                                             Neophyl                                                                              1                                                                                  ##STR15##  Liquid          1.5414                                                                             18.6 (18.8)               63  o-CF.sub.3                                                                             Neophyl                                                                              2                                                                                  ##STR16##  Solid    128-131° C.                                                                        17.5 (17.6)               64  o-CF.sub.3                                                                             Neophyl                                                                              1  SCH.sub.2 COO-n-Bu                                                                         Liquid          1.5632                        65  o-CF.sub.3                                                                             Neophyl                                                                              1  SCH.sub.2 COO-n-Oct                                                                        Liquid          1.5499                        66  o-CF.sub.3                                                                             Neophyl                                                                              1  1,3-Imidazol-1-yl                                                                          Viscous liquid  1.5686                                                                             19.7                                                                           (19.9)                    67  o-CF.sub.3                                                                             Neophyl                                                                              1  SMe         Viscous liquid  1.5804                                                                             20.9                                                                           (20.6)                    68  o-CF.sub.3                                                                             Neophyl                                                                              1  Phenoxy     Solid    69-71° C.                                                                          19.1                                                                           (19.0)                    69  o-CF.sub.3                                                                             Neophyl                                                                              1  Phenylthio  Solid    81-82° C.                                                                          18.7                                                                           (18.6)                    70  o-CF.sub.3                                                                             Neophyl                                                                              1                                                                                  ##STR17##  Solid    63-69° C.                     71  o-CF.sub.3                                                                             Neophyl                                                                              1                                                                                  ##STR18##  Viscous liquid  1.5759                        72  3-CF.sub.3                                                                             Neophyl                                                                              1  F           Solid    50-56° C.                                                                          20.6                          4-Cl                                             (20.3)                    73  3-CF.sub.3                                                                             Neophyl                                                                              1  Cl          Solid    69-71° C.                                                                          20.9  99.0                    4-Cl                                             (19.8)                    74  3-CF.sub.3                                                                             Neophyl                                                                              1  Br          Solid    72-74° C.                                                                          18.3  99.0                    4-Cl                                             (18.4)                    75  3-CF.sub.3                                                                             Neophyl                                                                              2  O           Solid    58-61° C.                                                                          20.4                          4-Cl                                             (20.7)                    76  3-CF.sub.3                                                                             Neophyl                                                                              1  OAc         Solid    60-62° C.                                                                          19.2                          4-Cl                                             (19.0)                    77  3-CF.sub.3                                                                             Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid    86-88° C.                                                                          17.6                          4-Cl                                             (17.3)                    78  3-CF.sub.3                                                                             Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    159-161° C.                                                                        18.7                          4-Cl                                             (18.8)                    79  2.4-Difluoro                                                                           Neophyl                                                                              1  F           Solid    60-63° C.                                                                          22.6                                                                           (22.9)                    80  2,4-Difluoro                                                                           Neophyl                                                                              1  Cl          Liquid          1.5730                                                                             21.9  98.1                                                                     (22.2)                    81  2,4-Difluoro                                                                           Neophyl                                                                              2  O           Viscous liquid  1.5821                                                                             23.1                                                                           (23.4)                    82  2,4-Difluoro                                                                           Neophyl                                                                              1  OAc         Viscous liquid  1.5598                                                                             21.3                                                                           (21.3)                    83  2,4-Difluoro                                                                           Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Viscous liquid  1.6156                                                                             19.1                                                                           (19.2)                    84  2,4-Difluoro                                                                           Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    131-134° C.                                                                        20.9                                                                           (21.0)                    85  3,4-Difluoro                                                                           Neophyl                                                                              1  F           Liquid          1.5793                                                                             23.2                                                                           (22.9)                    86  3,4-Difluoro                                                                           Neophyl                                                                              1  Cl          Liquid          1.5745                                                                             22.1  96.9                                                                     (22.2)                    87  3,4-Difluoro                                                                           Neophyl                                                                              2  O           Viscous liquid  1.5820                                                                             23.3                                                                           (23.4)                    88  3,4-Difluoro                                                                           Neophyl                                                                              1  OAc         Solid    33-35° C.                                                                          21.3                                                                           (21.3)                    89  3,4-Difluoro                                                                           Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid    92-94° C.                                                                          19.5                                                                           (19.2)                    90  3,4-Difluoro                                                                           Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    50-53° C.                                                                          20.8                                                                           (21.0)                    91  2,4,5-Trifluoro                                                                        Neophyl                                                                              1  F           Liquid          1.5644                                                                             22.0                                                                           (22.2)                    92  2,4,5-Trifluoro                                                                        Neophyl                                                                              1  Cl          Solid    65-67° C.                                                                          21.7  99.9                                                                     (21.5)                    93  2,4,5-Trifluoro                                                                        Neophyl                                                                              2  O           Viscous liquid  1.5729                                                                             22.4                                                                           (22.6)                    94  2,4,5-Trifluoro                                                                        Neophyl                                                                              1  OAc         Solid    59-61° C.                                                                          20.8                                                                           (20.6)                    95  2,4,5-Trifluoro                                                                        Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid    81-83° C.                                                                          18.7                                                                           (18.7)                    96  2,4,5-Trifluoro                                                                        Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    125-130° C.                                                                        20.2                                                                           (20.3)                    97  o-Cl    Neophyl                                                                              1  F           Solid    72-74° C.                                                                          23.2                                                                           (23.0)                    98  o-Cl    Neophyl                                                                              1  Cl          Viscous liquid  1.5981                                                                             22.2                                                                           (22.3)                    99  o-Cl    Neophyl                                                                              2  O           Viscous liquid  1.6070                                                                             23.4                                                                           (23.5)                    100 o-Cl    Neophyl                                                                              1  OAc         Viscous liquid  1.5800                                                                             21.2                                                                           (21.4)                    101 o-Cl    Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid    100-103° C.                                                                        19.1                                                                           (18.7)                    102 m-Cl    Neophyl                                                                              1  F           Solid    58-62° C.                                                                          23.1                                                                           (23.0)                    103 m-Cl    Neophyl                                                                              1  Cl          Solid    41-43° C.                                                                          22.3  96.3                                                                     (22.3)                    104 m-Cl    Neophyl                                                                              2  O           Viscous liquid  1.6048                                                                             23.6                                                                           (23.5)                    105 m-Cl    Neophyl                                                                              1  OAc         Viscous liquid  1.5801                                                                             21.5                                                                           (21.4)                    106 m-Cl    Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Viscous liquid  1.6326                                                                             19.0                                                                           (19.2)                    107 m-Cl    Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    165-169° C.                                                                        21.1                                                                           (21.0)                    108 p-Cl    Neophyl                                                                              1  F           Solid    104-105° C.                                                                        23.0                                                                           (23.0)                    109 p-Cl    Neophyl                                                                              1  Cl          Solid    70-72° C.                                                                          22.6  99.0                                                                     (22.3)                    110 p-Cl    Neophyl                                                                              2  O           Viscous liquid  1.6045                                                                             23.4                                                                           (23.5)                    111 p-Cl    Neophyl                                                                              1  OAc         Viscous liquid  1.5808                                                                             21.5                                                                           (21.4)                    112 p-Cl    Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid    89-92° C.                                                                          19.3                                                                           (19.2)                    113 p-Cl    Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    70-73° C.                                                                          20.8                                                                           (21.0)                    114 p-Me    Neophyl                                                                              1  F           Viscous liquid  1.5925                                                                             24.2                                                                           (24.0)                    115 p-Me    Neophyl                                                                              1  Cl          Solid    34.5-35.5° C.                                                                      23.5  96.7                                                                     (23.2)                    116 p-Me    Neophyl                                                                              2  O           Viscous liquid  1.6013                                                                             24.4                                                                           (24.5)                    117 p-Me    Neophyl                                                                              1  OAc         Viscous liquid  1.5780                                                                             22.4                                                                           (22.2)                    118 p-Me    Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid    126-128° C.                                                                        20.1                                                                           (19.9)                    119 p-Me    Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    103-108° C.                                                                        21.5                                                                           (21.8)                    120 m-Me    Neophyl                                                                              1  F           Solid    58-59° C.                                                                          24.0                                                                           (24.0)                    121 m-Me    Neophyl                                                                              1  Cl          Viscous liquid  1.5893                                                                             23.5  98.2                                                                     (23.2)                    122 m-Me    Neophyl                                                                              2  O           Viscous liquid  1.5969                                                                             24.8                                                                           (24.5)                    123 m-Me    Neophyl                                                                              1  OAc         Viscous liquid  1.5748                                                                             22.5                                                                           (22.2)                    124 m-Me    Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid    51-54° C.                                                                          20.1                                                                           (19.9)                    125 m-Me    Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    130-135° C.                                                                        21.5                                                                           (21.8)                    126 p-Me    Neophyl                                                                              1  F           Solid    95-98° C.                                                                          24.1                                                                           (24.0)                    127 p-Me    Neophyl                                                                              1  Cl          Solid    51-53° C.                                                                          23.3  99.3                                                                     (23.2)                    128 p-Me    Neophyl                                                                              2  O           Viscous liquid  1.5982                                                                             24.7                                                                           (24.5)                    129 p-Me    Neophyl                                                                              1  OAc         Viscous liquid  1.5755                                                                             22.4                                                                           (22.2)                    130 p-Me    Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid    92-94° C.                                                                          20.2                                                                           (19.9)                    131 p-Me    Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    146-148° C.                                                                        21.5                                                                           (21.8)                    132 o-OMe   Neophyl                                                                              1  F           Viscous liquid  1.5885                                                                             23.0                                                                           (23.2)                    133 o-OMe   Neophyl                                                                              1  Cl          Solid    69-72° C.                                                                          22.7  99.5                                                                     (22.5)                    134 o-OMe   Neophyl                                                                              2  O           Viscous liquid  1.6013                                                                             24.1                                                                           (23.7)                    135 o-OMe   Neophyl                                                                              1  OAc         Viscous liquid                                                                          93-96° C.                                                                      1.5756                                                                             21.8                                                                           (21.5)                    136 o-OMe   Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Solid    93-96° C.                                                                          19.6                                                                           (19.4)                    137 o-OMe   Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    107-113° C.                                                                        21.3                                                                           (21.2)                    138 p-OMe   Neophyl                                                                              1  F           Viscous liquid  1.5943                                                                             23.4                                                                           (23.2)                    139 p-OMe   Neophyl                                                                              1  Cl          Viscous liquid  1.5918                                                                             22.7  96.2                                                                     (22.5)                    140 p-OMe   Neophyl                                                                              2  O           Viscous liquid  1.6004                                                                             23.5                                                                           (23.7)                    141 p-OMe   Neophyl                                                                              1  OAc         Viscous liquid  1.5777                                                                             21.9                                                                           (21.5)                    142 p-OMe   Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Viscous liquid  1.6281                                                                             19.0                                                                           (19.4)                    143 p-OMe   Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    134-140° C.                                                                        21.4                                                                           (21.2)                    144 H       Neophyl                                                                              1  F           Solid    37-40° C.                                                                          24.9                                                                           (24.7)                    145 H       Neophyl                                                                              1  Cl          Viscous liquid  1.5937                                                                             24.3  97.1                                                                     (23.9)                    146 H       Neophyl                                                                              2  O           Viscous liquid  1.6021                                                                             24.8                                                                           (25.2)                    147 H       Neophyl                                                                              1  OAc         Viscous liquid  1.5769                                                                             23.1                                                                           (22.8)                    148 H       Neophyl                                                                              1  SSCN(Me).sub.2                                                                             Viscous liquid  1.6343                                                                             20.6                                                                           (20.4)                    149 H       Neophyl                                                                              1  1,2,4-Triazol-1-yl                                                                         Solid    130-135° C.                                                                        22.5                                                                           (22.4)                    150 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  F           Solid     98-102° C.                                                                        25.9                                                                           (26.4)                    151 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  Cl          Solid    51-52° C.                                                                          25.4  98.6                                                                     (25.5)                    152 o-CF.sub.3                                                                             Cyclohexyl                                                                           2  O           Solid    125-128° C.                                                                        26.2                                                                           (27.1)                    153 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  OAc         Liquid          1.5250                                                                             23.8                                                                           (24.3)                    154 o-CF.sub.3                                                                             Cyclohexyl                                                                           1                                                                                  ##STR19##  Liquid          1.5111                                                                             21.8 (22.3)               155 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  SCH.sub.2 COO-n-Bu                                                                         Liquid          1.5400                        156 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  SCH.sub.2 COO-n-Oct                                                                        Liquid          1.5312                        157 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  SSCN(Me).sub.2                                                                             Solid    154-156° C.                                                                        21.7                                                                           (21.7)                    158 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  1,2,4-Triazol-1-yl                                                                         Solid    176-180° C.                                                                        23.5                                                                           (23.8)                    159 m-CF.sub.3                                                                             Cyclohexyl                                                                           2  O           Solid    84-86° C.                                                                          26.9                                                                           (27.1)                    160 m-CF.sub.3                                                                             Cyclohexyl                                                                           1  OAc         Solid    59-61° C.                                                                          25.0                                                                           (24.3)                    161 m-CF.sub.3                                                                             Cyclohexyl                                                                           1  SSCN(Me).sub.2                                                                             Solid    124-126° C.                                                                        21.6                                                                           (21.6)                    162 m-CF.sub.3                                                                             Cyclohexyl                                                                           1  1,2,4-Triazol-1-yl                                                                         Solid    191-184° C.                                                                        22.9                                                                           (23.8)                    163 p-CF.sub.3                                                                             Cyclohexyl                                                                           1  F           Solid    240° C.                                                                            26.4                                                                (decomp.)  (26.4)                    164 p-CF.sub.3                                                                             Cyclohexyl                                                                           1  Cl          Solid    74-75° C.                                                                          25.8  99.0                                                                     (25.5)                    165 p-CF.sub.3                                                                             Cyclohexyl                                                                           2  O           Solid    86-89° C.                                                                          26.8                                                                           (27.1)                    166 p-CF.sub.3                                                                             Cyclohexyl                                                                           1  OAc         Solid    68-71° C.                                                                          23.9                                                                           (24.3)                    167 p-CF.sub.3                                                                             Cyclohexyl                                                                           1  SCH.sub.2 COO-n-Bu                                                                         Liquid          1.5337                                                                             20.4                                                                           (20.6)                    168 p-CF.sub.3                                                                             Cyclohexyl                                                                           1  SSCN(Me).sub.2                                                                             Solid    85-87° C.                                                                          21.7                                                                           (21.6)                    169 p-CF.sub.3                                                                             Cyclohexyl                                                                           1  1,2,4-Triazol-1-yl                                                                         Solid    215-225° C.                                                                        23.4                                                                           (23.8)                    170 m-F     Cyclohexyl                                                                           1  F           Solid    225° C.                                                                            29.6                                                                (decomp.)  (29.7)                    171 m-F     Cyclohexyl                                                                           1  Cl          Solid    52-53° C.                                                                          28.7                                                                           (28.6)                    172 m-F     Cyclohexyl                                                                           2  O           Solid    44-46° C.                                                                          31.0                                                                           (30.6)                    173 m-F     Cyclohexyl                                                                           1  OAc         Solid    52-54° C.                                                                          27.1                                                                           (27.0)                    174 m-F     Cyclohexyl                                                                           1  SCH.sub.2 COO-n-Bu                                                                         Liquid          1.5555                                                                             22.9                                                                           (22.5)                    175 m-F     Cyclohexyl                                                                           1  SSCN(Me).sub.2                                                                             Solid    110-112° C.                                                                        24.0                                                                           (23.7)                    176 m-F     Cyclohexyl                                                                           1  1,2,4-Triazol-1-yl                                                                         Solid    208° C.                                                                            26.7                                                                (decomp.)  (26.5)                    177 o-CF.sub.3                                                                             Neophyl                                                                              1  SSCN(Et).sub.2                                                                             Liquid          1.5931                                                                             17.2                                                                           (17.5)                    178 o-CF.sub.3                                                                             Neophyl                                                                              1  o-t-Butylphenoxy                                                                           Solid    75-76° C.                                                                          17.5                                                                           (17.5)                    179 o-CF.sub.3                                                                             Neophyl                                                                              1  2,6-Diisopropylphenoxy                                                                     Liquid          1.5619                                                                             16.7                                                                           (16.8)                    180 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  SSCN(Et).sub.2                                                                             Solid    105-107° C.                                                                        20.6                                                                           (20.5)                    181 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  o-t-Butylphenoxy                                                                           Liquid          1.5519                                                                             19.9                                                                           (20.5)                    182 o-CF.sub.3                                                                             Cyclohexyl                                                                           1  2,6-Diisopropylphenoxy                                                                     Solid    53-57° C.                                                                          19.3                                                                           (19.5)                    183 p-Cl    Cyclohexyl                                                                           1  F           Solid    256-258° C.                                                                        28.2                                                                           (28.6)                    184 p-Cl    Cyclohexyl                                                                           1  Cl          Solid    49-50° C.                                                                          27.1                                                                           (27.5)                    185 p-Cl    Cyclohexyl                                                                           2  O           Solid    111-113° C.                                                                        29.4                                                                           (29.3)                    186 p-Cl    Cyclohexyl                                                                           1  OAc         Solid    97-99° C.                                                                          26.4                                                                           (26.1)                    187 p-Cl    Cyclohexyl                                                                           1  SCH.sub.2 COO-n-Bu                                                                         Liquid          1.5645                                                                             21.9                                                                           (21.8)                    188 p-Cl    Cyclohexyl                                                                           1  SSCN(Me).sub.2                                                                             Solid    70-73° C.                                                                          22.5                                                                           (23.0)                    189 p-Cl    Cyclohexyl                                                                           1  1,2,4-Triazol-1-yl                                                                         Solid    217-223° C.                                                                        25.5                                                                           (25.5)                    190 3,4-Dichloro                                                                           Cyclohexyl                                                                           1  F           Solid    193° C.                                                                            26.0                                                                (decomp.)  (26.4)                    191 3,4-Dichloro                                                                           Cyclohexyl                                                                           1  Cl          Liquid          1.5903                                                                             25.1  97.2                                                                     (25.4)                    192 3,4-Dichloro                                                                           Cyclohexyl                                                                           2  O           Solid    129-130° C.                                                                        27.4                                                                           (27.0)                    193 3,4-Dichloro                                                                           Cyclohexyl                                                                           1  OAc         Solid     99-101° C.                                                                        24.4                                                                           (24.2)                    194 3,4-Dichloro                                                                           Cyclohexyl                                                                           1  SSCN(Me).sub.2                                                                             Solid    138-140° C.                                                                        21.5                                                                           (21.5)                    195 3,4-Dichloro                                                                           Cyclohexyl                                                                           1  1,2,4-Triazol-1-yl                                                                         Solid    207-213° C.                                                                        24.0                                                                           (23.8)                    196 p-Me    Cyclohexyl                                                                           1  F           Solid    245-247° C.                                                                        29.7                                                                           (30.0)                    197 p-Me    Cyclohexyl                                                                           1  Cl          Liquid          1.5705                                                                             28.6                                                                           (28.8)                    198 p-Me    Cyclohexyl                                                                           2  O           Solid    71-73° C.                                                                          31.0                                                                           (30.9)                    199 p-Me    Cyclohexyl                                                                           1  OAc         Solid    83-85° C.                                                                          27.6                                                                           (27.3)                    200 p-Me    Cyclohexyl                                                                           1  SCH.sub.2 COO-n-Bu                                                                         Liquid          1.5605                                                                             22.9                                                                           (22.7)                    201 p-Me    Cyclohexyl                                                                           1  SSCN(Me).sub.2                                                                             Solid    92-94° C.                                                                          23.8                                                                           (23.9)                    202 p-Me    Cyclohexyl                                                                           1  1,2,4-Triazol-1-yl                                                                         Solid    205-210° C.                                                                        26.5                                                                           (26.7)                    203 p-Methoxy                                                                              Cyclohexyl                                                                           1  F           Solid    234-236° C.                                                                        29.4                                                                           (28.9)                    204 p-Methoxy                                                                              Cyclohexyl                                                                           1  Cl          Liquid          1.5749                                                                             27.6  96.9                                                                     (27.8)                    205 p-Methoxy                                                                              Cyclohexyl                                                                           2  O           Solid    65-69° C.                                                                          29.6                                                                           (29.7)                    206 p-Methoxy                                                                              Cyclohexyl                                                                           1  OAc         Solid    82-84° C.                                                                          26.7                                                                           (26.3)                    207 p-Methoxy                                                                              Cyclohexyl                                                                           1  SCH.sub.2 COO-n-Bu                                                                         Liquid          1.5630                                                                             22.5                                                                           (22.0)                    208 p-Methoxy                                                                              Cyclohexyl                                                                           1  SSCN(Me).sub.2                                                                             Solid    78-80° C.                                                                          23.1                                                                           (23.2)                    209 p-Methoxy                                                                              Cyclohexyl                                                                           1  1,2,4-Triazol-1-yl                                                                         Solid    202-207° C.                                                                        25.4                                                                           (25.8)                    __________________________________________________________________________

                                      TABLE 1-2                                    __________________________________________________________________________      ##STR20##                                                                                                    Physical property                               Compound                                           Tin content                                                                           GLC                  No.    R*    R.sup.1                                                                              m X         Appearance                                                                             m.p. or b.p.                                                                           n.sup.30                                                                           (%)    purity               __________________________________________________________________________                                                               (%)                  210    2-Thienyl                                                                            Neophyl                                                                              1 Cl        Viscous liquid  1.5987                                                                             23.5                                                                           (23.6)                      211    2-Thienyl                                                                            Neophyl                                                                              2 O         Solid   90-99° C.                                                                           24.7                                                                           (24.9)                      212    2-Thienyl                                                                            Neophyl                                                                              1                                                           OAC    Viscous liquid                                                                             1.5798                                                                           22.5                                                                                                         (22.6)                      213    2-Thienyl                                                                            Neophyl                                                                              1 SSCN(Me).sub.2                                                                           Solid   77-79° C.                                                                           20.4                                                                           (20.2)                      214    2-Thienyl                                                                            Neophyl                                                                              1 1,2,4-Triazol-l-yl                                                                       Solid   147-157° C.                                                                         21.8                                                                           (22.1)                      215    3-Thienyl                                                                            Neophyl                                                                              1 F         Solid   85-90° C.                                                                           24.7                                                                           (24.4)                      216    3-Thienyl                                                                            Neophyl                                                                              1 Cl        Viscous liquid  1.5988                                                                             23.9   97.8                                                                    (23.6)                      217    3-Thienyl                                                                            Neophyl                                                                              2 O         Solid   78-81° C.                                                                           25.0                                                                           (24.9)                      218    3-Thienyl                                                                            Neophyl                                                                              1 OAc       Solid   46-48° C.                                                                           22.7                                                                           (22.5)                      219    3-Thienyl                                                                            Neophyl                                                                              1 SSCN(Me).sub.2                                                                           Solid   87-89° C.                                                                           20.6                                                                           (20.2)                      220    3-Thienyl                                                                            Neophyl                                                                              1 1,2,4-Triazol-l-yl                                                                       Solid   140-144° C.                                                                         21.9                                                                           (22.1)                      221    Trimethyl-                                                                           Neophyl                                                                              1 F         Liquid          1.5412                                 silylmethyl                                                             222    Trimethyl-                                                                           Neophyl                                                                              1 Cl        Solid   42.5-43.5° C.                                                                              99.0                        silylmethyl                                                             223    Trimethyl-                                                                           Neophyl                                                                              2 O         Solid   90.5-91.0° C.                           silylmethyl                                                             224    Trimethyl-                                                                           Neophyl                                                                              1 OAc       Liquid          1.5372                                 silylmethyl                                                             225    Trimethyl-                                                                           Neophyl                                                                              1 SSCN(Me).sub.2                                                                           Solid   62-63° C.                               silylmethyl                                                             226    Trimethyl-                                                                           Neophyl                                                                              1 1,2,4-Triazol-l-yl                                                                       Solid   78-85° C.                               silylmethyl                                                             227    Dimethyl-                                                                            Neophyl                                                                              1 Cl        Solid   30° C.      99.0                        phenylsilyl-                                                                   methyl                                                                  228    Dimethyl-                                                                            Neophyl                                                                              2 O         Solid   87-89° C.                               phenylsilyl-                                                                   methyl                                                                  229    Dimethyl-                                                                            Neophyl                                                                              1 OAc       Liquid          1.5617                                 phenylsilyl-                                                                   methyl                                                                  230    Dimethyl-                                                                            Neophyl                                                                              1 SSCN(Me).sub.2                                                                           Liquid          1.6141                                 phenylsilyl-                                                                   methyl                                                                  231    Trimethyl-                                                                           Cyclo-                                                                               1 F         Solid   167-170° C.                             silylmethyl                                                                          hexyl                                                             232    Trimethyl-                                                                           Cyclo-                                                                               1 Cl        Solid   74° C.      99.0                        silylmethyl                                                                          hexyl                                                             233    Trimethyl-                                                                           Cyclo-                                                                               2 O         Solid   151-153° C.                             silylmethyl                                                                          hexyl                                                             234    Trimethyl-                                                                           Cyclo-                                                                               1 OAc       Solid   52-53° C.                               silylmethyl                                                                          hexyl                                                             235    Trimethyl-                                                                           Cyclo-                                                                               1 SSCN(Me).sub.2                                                                           Solid   101-102° C.                             silylmethyl                                                                          hexyl                                                             236    Trimethyl-                                                                           Cyclo-                                                                               1 1,2,4-Triazol-l-yl                                                                       Solid   197-201° C.                             silylmethyl                                                                          hexyl                     (decomp.)                               237    Trimethyl- silylmethyl                                                               Cyclo- hexyl                                                                         1                                                                                 ##STR21##                                                                               Solid   130-132° C.                      238    Neopentyl                                                                            Neophyl                                                                              1 Cl        Solid   65-66° C.                                                                           23.6   99.9                                                                    (24.1)                      239    Neopentyl                                                                            Neophyl                                                                              2 O         Solid   100-101° C.                                                                         25.7                                                                           (25.6)                      240    Neopentyl                                                                            Cyclo-                                                                               1 Cl        Solid   106-107° C.                                                                         29.5                                     hexyl                                 (30.3)                      241    Neopentyl                                                                            Cyclo-                                                                               2 O         Solid   202-203° C.                                                                         32.5                                     hexyl                                 (32.6)                      242    Dimethyl-                                                                            Neophyl                                                                              1 F         Solid   47-48° C.                               phenylsilyl-                                                                   methyl                                                                  243    Dimethyl-                                                                            Neophyl                                                                              1 1,2,4-Triazol-1-yl                                                                       Solid   66-71° C.                               phenylsilyl-                                                                   methyl                                                                  244    Dimethyl- phenylsilyl- methyl                                                        Neophyl                                                                              1                                                                                 ##STR22##                                                                               Liquid          1.5484                          245    Dimethyl-                                                                            Cyclo-                                                                               1 F         Solid   107-110° C.                             phenylsilyl-                                                                         hexyl                                                                    methyl                                                                  246    Dimethyl-                                                                            Cyclo-                                                                               1 Cl        Liquid          1.5593                                 phenylsilyl-                                                                         hexyl                                                                    methyl                                                                  247    Dimethyl-                                                                            Cyclo-                                                                               2 O         Solid   48-51° C.                               phenylsilyl-                                                                         hexyl                                                                    methyl                                                                  248    Dimethyl-                                                                            Cyclo-                                                                               1 OAc       Liquid          1.5421                                 phenylsilyl-                                                                         hexyl                                                                    methyl                                                                  249    Dimethyl-                                                                            Cyclo-                                                                               1 SSCN(Me).sub.2                                                                           Liquid          1.6054                                 phenylsilyl-                                                                         hexyl                                                                    methyl                                                                  250    Dimethyl-                                                                            Cyclo-                                                                               1 1,2,4-Triazol-l-yl                                                                       Solid   118- 124° C.                            phenylsilyl-                                                                         hexyl                                                                    methyl                                                                  251    Dimethyl- phenylsilyl- methyl                                                        Cyclo- hexyl                                                                         1                                                                                 ##STR23##                                                                               Solid   125-126° C.                      __________________________________________________________________________

Various compounds to be employed in accordance with the present invention were formulated as wettable powders, emulsifiable concentrates, fine dusts, etc., as shown below.

    ______________________________________                                          Ingredient        Part by weight                                              ______________________________________                                         Formulation 1 Wettable powder                                                  Compound No. 28    50.0                                                        Clay               40.5                                                        White carbon       5.0                                                         Polyoxyalkylenealkyl-                                                                             3.0                                                         allylethersulfate                                                              Alkylbenzensulfonate                                                                              1.5                                                         Formulation 2 Emulsifiable concentrate                                         Compound No. 25    25.0                                                        Alkylallylsulfonate                                                                               3.0                                                         Polyoxyalkylenealkylallyl                                                                         10.0                                                        ether                                                                          Xylene             42.0                                                        Dimethylformamide  20.0                                                        ______________________________________                                    

Compound No. 25, alkylalkylsulfonate and polyoxyalkylenealkylallyl ether are uniformly dissolved in xylene and dimethylformamide to obtain emulsifiable concentrate. The preparation is diluted with water when use.

    ______________________________________                                         Formulation 3 Fine dust                                                        ______________________________________                                         Compound No. 33     15.0                                                       White carbon        20.0                                                       Isopropylazidophosphate                                                                            0.3                                                        Fine clay           64.7                                                       ______________________________________                                    

The above ingredients are mixed and ground. The mixture is finely ground by Jetmizer grinder to obtain fine dust. The preparation is used as it is.

    ______________________________________                                         Formulation 4 Dust                                                             ______________________________________                                                Compound No. 49                                                                           5.0                                                                 Clay       91.7                                                                White carbon                                                                              3.0                                                                 Tall oil   0.3                                                          ______________________________________                                    

The above ingredients are mixed and ground to obtain dust preparation. The dust is used as it is.

Experiment 1 Sample

Compounds of the invention to be tested are dissolved in a minimum of DMF. Distilled water containing Tween 20 at the concentration of 100 ppm is thereto added to prepare a series of samples of the desired concentrations.

Test Procedure

A. Suppression of Spodoptera litura (common cutworm) larvae

Cabbage leaves (5×5 cm) were immersed in the sample solution as prepared above and air dried. Two leaves were placed in a petri dish (9 cm diameter) and 10 third-instar larvae of Spodoptera litura were placed in the dish. The dish was held at 25° C. and the mortality of the larvae was measured after 48 hours.

C. Suppression of Plutella xylostella (diamond backmoth) larvae

Cabbage leaf (7×7 cm) was immersed in the sample solution and air dried. The leaf was placed in a petri dish (9 cm diameter) and 10 third-instar larvae of Plutella xylostella were placed in the dish. The dish was held at 25° C. and the mortality of the larvae was measured after 48 hours.

D. Suppression of Adoxophyes sp. larvae

Whole tea leaves were immersed in the sample solution and air dried. Three leaves were placed in a polyethylene petri dish (6 cm diameter, 4 cm depth) and 10 forth-instar larvae of Adoxophyes sp. were placed in the dish. The dish was held at 25° C. and the mortality of the larvae was measured after 48 hours.

E. Suppression of Nephotettix cincticeps (green rice leaf hopper) (sensitive)

Six or seven rice seedlings of 1.5 to 2 plant age in leaf number were bundled and the roots were wrapped in sponge. The seedlings were placed in a polyethylene cup (diameter 6 cm, depth 4 cm) and the cup is placed in a rotary application tower, whereby the leaves and sheaths of the seedlings were sprayed with 2 ml of the sample solution and air dried. The treated seedlings were covered with a transparent plastic cylinder and ten female larvae were placed in the cylinder. The atmosphere in the cylinder was kept at 25° C., and the mortality after 48 hours was measured.

I. and J. Suppression of Myzus persicae (green peach aphid) larvae (I: sensitive, J: resistant)

A polyethylene cup (diameter 6 cm, depth 4 cm) was filled with 0.3% agar gel and a piece of Chinese cabbage leaf (3×3 cm) was placed on the gel. An apterous adult of Myzus persicae was placed on the cabbage and allowed to egg-deposit while keeping the surrounding atmosphere at 25° C. for 24 hours. After removing the adult, 2 ml of the sample was sprayed on the leaf under a rotary application tower. The test system was kept at 25° C. for 48 hours and the mortality of born larvae was measured.

M. Suppression of Tetranychus cinnabrinus (carmine spider mite)

A polyethylene cup (diameter 6 cm, depth 4 cm) was filled with 0.3% agar gel and a piece of bush bean leaf (diameter 2 cm) was placed on the gel. About twelve adults of Tetranychus cinnabrinus were placed on the leaf. After 24 hours at 25° C., dead and feeble adults were removed and 2 ml of the sample solution was sprayed on the leaf and audlts under a rotary application tower. Following such treatment the test system was kept at 25° C. and the mortality was measured after 48 hours.

O. Suppression of Tetranychus urticae (Two-spotted spider mite)

The same test procedure as above was repeated on Tetranychus urticae.

X. Suppression of Tetranychus cinnabrinus larvae

A polyethylene cup (diameter 6 cm, depth 4 cm) was filled with 0.3% agar gel and a piece of bush bean leaf (diameter 2 cm) was placed on the gel. Seven adults of Tetranychus cinnabrinus were placed on the leaf and allowed to egg-deposit while keeping the surrounding atmosphere at 25° C. for 24 hours. After removing the adult, 2 ml of the sample was sprayed on the leaf under a rotary application tower. The test system was kept at 25° C. for 7 days and the mortality of born larvae was measured.

Y. Suppression of Tetranychus urticae larvae

The same test procedure as above was repeated on Tetranychus urticae larvae.

N. Suppression of Tetranychus cinnabrinus eggs

P. Suppression of Tetranychus urticae eggs

The test procedure as described in X and Y were repeated on Tetranychus cinnabrinus and urticae eggs. The test system was kept at 25° C. for 7 days and the mortality of eggs was measured by counting the number of eggs which did not hatch.

T. Suppression of Henosepilachna vigintioctopunctata (twenty-eight-spotted beetle) adults

Japanese eggplant leaf (6×6 cm) was immersed in the sample solution and air dired. The leaf was placed in a petri dish (9 cm diameter) and 5 adults of Henosepilachna vigintioctopunctata were placed in the dish. The dish was held at 25° C. and the mortality was measured after 48 hours.

R. Suppression of Periplaneta americana (American cockroach) larvae

A filter paper soaked with the sample solution was placed in a petri dish (diameter 9 cm). Five Periplaneta americana larvae with 7 days after hatching were placed in the dish hold at 25° C. and the mortality after 48 hours was measured.

W. Suppression of Callosobruchus chinensis (adzuki bean weevil)

Ten Callosobruchus chinensis adults within 24 hours after hatching were placed in a screw cylinder (diameter 1.8 cm, height 5 cm) with stainless nets at the up-and-down openings. The cylinder was submerged in the sample solution, and the adults exposed to the solution were air dried. The mortality was measured after 48 hours at 25° C.

K. Suppression of Panonychus citri (citrus red mite)

The same test procedure as M and O was repeated on Panonychus citri except that lemon leaf, rather than bush bean leaf, was employed.

Q. Suppression of Tetranychus kanzawai (kanzawa spider mite) (resistant adults)

The same test procedure as M and O was repeated on resistant adults of Teranychus kanzawai.

Test Results

Table 2 below shows the mortality (%) of various pests exposed to the indicated compounds (I) at several concentrations, wherein the following codes are employed for pests.

A: Spodoptera litura (larvae)

C: Plutella xylostella (larvae)

D: Adoxophyes sp. (larvae)

E: Nephotettix cincticeps (sensitive adults)

I: Myzus persicae (sensitive larvae)

J: Myzus persicae (resistant larvae)

K: Panonychus citri (adults)

L: Panonychus citri (eggs)

M: Tetranychus cinnabrinus (adults)

N: Tetranychus cinnabrinus (eggs)

O: Tetranychus urticae (adults)

P: Tetranychus urticae (eggs)

Q: Tetranychus kanzawai (resistant adults)

R: Periplaneta americana (larvae)

T: Henosepilachna vigintioctopunctata (adults)

W: Callosobruchus chinensis (adults)

X: Tetranychus cinnabrinus (eggs-larvae)

Y: Tetranychus urticae (eggs-larvae)

Table 2 also lits the test results on commercially available Osadan® and Plictran® employed as a control.

Resistance adults of Tetranychus kanzawai used in Test Q were those which acquired resistance against Osadan® and Plictran® and were gathered at Yaguchihara and Okadahara, Shizuoka, Japan. Test results on the adults from Yaguchihara and Okadahara are shown on the left and right, respectively, of column "Q" in Table 2.

    TABLE 2        Concen-                     Compound tration No. (ppm) A C D E G H I J      K L M N O P Q R T W X Y        Osadan 1000           100 93   47 52    100   250           100  95      37 36    100 100  63           90    27 16     80 Plictran 1000 100          100    51 69    100  250 100          100  100  23 36    100 100  63      100          100  93  10 24    40 50  15           88    1 3 1 1000           100 70   97     100  250             100   90     90  63        97         100  16             77 2 1000 100          100  250 100          100      100  63 70          100  97 3 1000           100         100  250           100        100  63        87     100        70  16             79 4      1000      100     100 70        100  250             100 97  70     100      63        91     100        80  16             76 5 1000           100            100  250             100 71  76     100  63         97    100        80  16         89    80 6 1000           100         100  250         100        100  63         90    100        80  16         86    72 7      1000       100    100 81   96     100  250       92 100     100  80 89        90  63         95    100   74  16             78 8 1000  100    100 95         100  100   250  95 100     100 83 79 93   100  63    94    100 9 1000       100  100  100   250           100 70 100 79 85 96    100 100  63       97  100  100   84    95 90  16           74  88 10 1000           100       96     100  250             100 95  96     100  63         84    100          70  16             93 11 1000 100   72   100    100 90     80 100      100 100  250 100 95     100 92   100 75 100       100 100  63  70     87      81   100  95 12 1000 100          93 100        100  250 90 90             95 80  63 16 1000  100  100 87  100  100   250       86 100      100 88  76 93     100  63         100    100   79  16         74    92      17 1000           100    97     100  250           100 80 100 86 81 89       100 100  63         97  100  100       100 98  16           73  75       85 18 1000           100         100  250             100 87 78 92      100  63         94    100 70  70     100  16             91        80 19      1000 100   100   100    100 95     80 100 100 100  250 80 80     84 100       100 92 100       100 100  63       81 86   100  98  16           91 20      1000 70      100    100 100        100  250           97  97       70 80       63           80 23 1000 100          94         98  250 90 100  63 25      1000  100  100 85  100 100  100   250       94 100     100  86 89      100  63         97    97        80 21 1000 100      100    100 83     80        100  250 80 100     100 93   100  100  63           100  100  16 24      1000 75      100    100 100     80   100  250       90 100   100  100         70 100  63        73   92  97 26 1000   100  100  100   250           1      00  100 78 83 93    100 100  63         97  91  97       100 95  16                    85 70 27 1000       100    100         100  250       100 88  97     100  63             100        95  16             82         70 28 1000       100    100 96     100 100 100 100  250       100 100        100  100 71      100 100  63       95    100  100 29 1000 100      100         100 85     100   100  250 75      100    100  100  63       77    97      100 30 1000           100  250  63 31 1000 100          93         95      250 95 85  63  16 32 1000 100      100    100       100  80  250 80 80        83    100  94  33 1000   100  100  100  100   250  93 100   100 70 86      92  100  63    92  100  16    72  77 34 1000  100  100  100   250         100 84 100  83 96    100 100  63         97  100  100   79    80 98      16         78    79        80 35 1000           100         100  250              100 74       100  63         94    100        90  16      93 36 1000 100   84   100    100 98     100 100 100 100  250 70 75      100    100 85 100       100 100  63       74    100  100 37 1000 85      100    100 100  250       100 100   100 74 100 75      100 100  63          93  88 38 1000 100      100    100 95  250 95 75     100 100   100      100       100  63           100  100       100 39 1000           84 92           100  250                     100 40 1000 100      100    100  91         100 100  250           87         100 90 41 1000       100    100 73       85     100  250             100   73     90  63         97    92 42      1000  100 72  100  100   250           100 84 100   96    100 100  63           97  100  100   71    70 98  16         91  84  70 43 1000      100         100  250             100 92  89     100  63         90    97      71       80  16             84 44 1000 100      100    100 100  250 70         100 90   100 92 100       100 100  63           80  94 45 1000 100        100    100 100  250  80     84 100   100 85 100  63           93  70      46 1000 100      100    100 82     100   100  250       100 100   100      100       80 100  63       100 69   97  100 47 1000       85    100         90  250           100  93 48 1000 100          100         100  250              85  88       100 100  63          90 71          95 49 1000           100         100  250           100 84 100       100 100  63      91  94  100       70 70 50 1000                    100  250      100 82       95  63         82    97  16             82 51 1000 100      100    100 75     100   100  250 85 75     100 100   100  100  63 70           100  97 52 1000 100      100    100 100  250 80 80      75   100      100       100 100  63           94  89 54 1000           100  250         100  100  63           97  92 59 1000  250             100        100       63             100 60 1000  250       75      100        100  63           100 61 1000  250             100        100  63             97 62      1000  250             89        100  63 63 1000  250             97        100  63             100 64 1000  250  63             100        90  16                  92        80 65 1000  250  63             100        70 66      1000  250       72      100        90  63             100 67 1000  250                83        90 68 1000  250       90      100        100  63              100  16             71 69 1000  250             100        100      63             94 70 1000  250             100        100  63       81 71 1000  250             100        100  63             97 72 1000      250             100        100  63             84 73 1000  250        100        100  63             82 74 1000  250             100      100  63             88 75 1000  250             100        100  63            93 76 1000  250             100        100  63             94 77      1000  250             100        100 78 1000  250             100      100  63             79 79 1000  250           100  100 100      98  63              79  97 95 80 1000  250           100  100 100      98  63         83 70 89 70 81 1000  250           100  100 100      100  63       87 80 100  82 1000  250           100  100 100      100  63      90  92 80 83 1000  250           96  100 100      100  63             93      80 84 1000  250           100  100 95      100  63             96 85      1000  250           90         100  63             100  16      90 86 1000  250           100  100 100      100  63           84 70 84      70 87 1000  250           97  94 95      100  63           73  76 70 88      1000  250           100  100 100      100  63           90   90 89 1000      250           100  93 100      100  63           77   95  16       80 90 1000  250           94  100 100      100  63             80 80 91      1000  250           97         98  63           74 92 1000  250       83         100 82 97       80  63           84  93  16             74 93 1000      250             100        100  63             97 94 1000  250        100        100  63             95 95 1000  250             100      100  63             91 96 1000  250             100        100  63            100 97 1000  250       74      100        100  63             100      16             72 98 1000  250       94      100 78       100  63           97 99 1000  250             100        100  63             100 100      1000  250             100        100  63             95 101 1000  250               100        70  63             94 102 1000  250             100            100  63             94 103 1000  250             100        100      63             93 104 1000  250             100        100  63        100 105 1000  250             100        100  63             97 106      1000  250             72        100  63             89 107 1000       86       250  63             93        90 108 1000  250             100      100  63             96 109 1000  250             100        100  63             100 110 1000  250             100        100  63             100      111 1000  250                     100  63             92 112 1000  250                100        100  63             91 113 1000  250      100        100  63             90 114 1000  250  63             94       90  16                     80 115 1000  250  63             98      80  16             79 116 1000  250                     98  63        92 117 1000  250             90  63 118 1000  250  63             93           75  16                     75 119 1000  250  63             100         85  16             88 120 1000  250                     100  63            100  16             91 121 1000  250  63             98        100       16             78        90 122 1000  250                     100  63                100  16             95 123 1000  250                     100      63             96 124 1000  250  63             91        70 125 1000      250  63             97        90 126 1000  250  63             100       80  16             70 127 1000       76  250  63             96      98  16                     80 128 1000  250  63             100      90  16                     80 129 1000  250  63                     95      16                     80 130 1000  250  63             92        95 131      1000  250  63             98        90 132 1000  250      100  63             97  16             81 133 1000  250  63      88        80 134 1000  250                     100  63             97      135 1000  250                     100  63             97 136 1000  250      63             89        80 137 1000  250                     92  63              92 138 1000  250                     100  63             82 139      1000  250                     100  63             81 140 1000  250                    100  63             81 141 1000  250      100 142 1000  250                     100 143 1000  250         100  63             81 144 1000  250                     100  63             93  16             76 145 1000  250                     100  63                100 146 1000  250                     100  63             96      147 1000  250                     100  63             98 148 1000  250                        100  63             97 149 1000  250       73          100  63             91 150 1000 100      100    100 100  250 75 90        100 100   100  100  63           100  100  16           97  94 151      1000 100      100    100 100  250  70     100 100   100  100  63      91 93   100  100  16           97  97 152 1000  250 80      100    100      82        100  63           74 153 1000  250 90      100    100 100  63               94 100 97  16             76 154 1000  250       100       94         100  63             100  16             90 155 1000  250  63         100        99  16             96 156 1000  250  63             100          100  16             93 157 1000  250           100  100 100      100       63           100 100 97 95 158 1000  250 45      100    100 91      100 159 1000 100          100         100  250           100  100  63             97  100  16           81  96 160 1000           100         100      250 90      100    94  63             97 161 1000 100          100        100  250  70         100  100  63           97  100  16           83      86 162 1000 100          100         100  250 70          100  100  63              100  100  16           73  81 163 1000  250      80 164 1000  250                     100  63             100  16          83 165 1000  250                     100  63             100  16              71 166 1000  250                     100  63             100 167      1000  250                     100  63             96  16             87      168 1000  250       86              100  63             100  16         82 169 1000  250                     100  63             100  16             90 170 1000  250                     100  63             90 171      1000 95      81  250                     100  63             97  16             72 172 1000  250 90                    97  63             96 173      1000  250 80                    100  63             100  16      94 174 1000  250       100              100  63             100  16             72 175 1000  250       100              100  63             91      176 1000  250 90                    100  63             97  16        76 210 1000  250                     100  63             85 211 1000      250                     95  63             78 212 1000  250             70 213 1000  250                     95 214 1000  250              70  63             77 216 1000  250                     100  63                 95  16             70 217 1000  250                     100      63             95 218 1000  250                     100  63      93 219 1000  250                     100  63             84 220 1000      250                     100  63             95 221 1000  250       85         76       100  63             100  16             97 222 1000  250        100              80  63             100  16             93 223 1000      250       92       88       100  63             100  16             97      224 1000  250       100              100  63             100  16          84 225 1000  250       83              100  63             100  16                93 226 1000  250       86       79       100  63      100  16             97 227 1000  250       100              100  63             100  16             76 228 1000  250       100              100      63             92 229 1000  250       100              100  63        93 230 1000  250                     100  63             100 231 1000      250 100      100       100  63             100  16             93 232      1000  250 100      100              100  63             100  16         96 233 1000  250 100             98       100  63             100  16                  96 234 1000  250 100             100  63             100  16                  96 235 1000  250 100             92       100  63       100  16             96 236 1000  250 90      100              100  63                100 91  16             86 237 1000  250 90      100        100  63             100  16             90 

What is claimed is:
 1. A compound of the formula: ##STR24## in which R¹ represents alkyl, cyclohexyl or neophyl, R* represents fluorophenyl or trifluoromethylphenyl when R¹ is alkyl; R* represents neopentyl, trimethylsilylmethyl or dimethylphenylsilylmethyl when R¹ is cyclohexyl; or R* represents 2-thienyl, 3-thienyl, neopentyl, trimethylsilylmethyl, dimethylphenylsilylmethyl or a group of the formula: ##STR25## wherein R³, R⁴ and R⁵ independently represent hydrogen, halogen, trifluoromethyl, lower alkyl or lower alkoxy when R¹ is neophyl, m represents 1 or 2, and X represents, when m is 1, halogen, imidazolyl, triazolyl, phenylthio or a radical selected from the group consisting of: ##STR26## wherein R⁶ represents alkyl, R⁷ and R⁸ independently represent lower alkyl and R⁹ and R¹⁰ independently represent hydrogen or lower alkyl; or X represents oxygen, sulfur or a radical selected from: ##STR27##
 2. A pesticidal composition which comprises as an essential component the compound of the formula (I) as defined in claim 1 together with a suitable carrier or adjuvant. 